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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28.08.2009 - 21.10.2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: According to guideline under GLP
Cross-reference
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Principles of method if other than guideline:
Not relevant
GLP compliance:
yes (incl. QA statement)
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
α-hydroxy-β,β-dimethyl-γ-butyrolactone
EC Number:
209-963-3
EC Name:
α-hydroxy-β,β-dimethyl-γ-butyrolactone
Cas Number:
599-04-2
Molecular formula:
C6H10O3
IUPAC Name:
(3R)-3-hydroxy-4,4-dimethyloxolan-2-one
Constituent 2
Reference substance name:
209 963 3
IUPAC Name:
209 963 3
Details on test material:
- Name of test material (as cited in study report): R-Pantolactone
- Physical state: solid
- Purity: 99.6%
- Storage condition of test material: RT

Results and discussion

Melting / freezing point
Melting / freezing pt.:
90.4 °C
Atm. press.:
99.2 kPa

Any other information on results incl. tables

No further remarks

Applicant's summary and conclusion

Conclusions:
The melting point of R-Pantolactone was determined to be 90.4 °C.
Executive summary:

The melting point of R-Pantolactone was determined to be 90.4 °C which is equal to 363.6 K

using the thermal analysis (DSC).The atmospheric pressure during the measurements was 99.2 kPa.